Aggregation network with centralized control
AssigneeJuniper Networks, Inc.
InventorsJames M. Murphy, Abhijit K. Choudhury, Pradeep Sindhu, Ina Minei, Jayabharat Boddu
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Abstract
An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.
Claims20
A centralized controller in communication with a plurality of aggregation nodes, edge routers, and access nodes of a network, wherein the centralized controller comprises:
- a topology module that executes a software defined networking (SDN) protocol to receive topology information from the edge routers;
- and
- a path computation module (PCM) that computes forwarding information for one or more transport label switched paths (LSPs) in accordance with the topology information, wherein the transport LSPs are for transporting network packets between the access nodes and the edge routers via the aggregation nodes,
- wherein the centralized controller outputs one or more messages to the aggregation nodes to communicate and install within each of the aggregation nodes the forwarding information for the one or more transport LSPs.
A method comprising:
- executing, by a centralized controller in communication with a plurality of aggregation nodes, edge routers, and access nodes of a network, a software defined networking (SDN) protocol to receive topology information from the one or more edge routers;
- computing, by the centralized controller, forwarding information for one or more transport label switched paths (LSPs) in accordance with the topology information, wherein the transport LSPs are for transporting network packets between the access nodes and the edge routers via the aggregation nodes;
- and
- outputting one or more messages from the centralized controller to the aggregation nodes to communicate and install within each of the aggregation nodes the forwarding information for the one or more transport LSPs.
Dependencies are inferred from the claim text.